Evans argues, then, that both the statement “there is no supernatural reality beyond this world” and the statement “there is a transcendent reality beyond this world” are philosophical, not scientific, propositions. Neither can be empirically proven in such a way that no rational person can doubt. To state that there is no God or that there is a God, then, necessarily entails faith. And so the declaration that science is the only arbiter of truth is not itself a scientific finding. It is a belief.”
Timothy Keller – Making Sense of God: An Invitation to the Skeptical.